Nonlinear lateral displacement of the single pile – A seismic analytical investigation

Abstract

In the construction industry, pile uses to enhance seismic stability of infrastructure and tower, if the soil faces insufficient bearing capacity and unallowable nonlinear lateral and vertical displacements. In this study, I assume that the nonlinear lateral displacement mechanism and its prediction were analyzed and developed based on the non-linear seismic load. (i) The nature of seismic load, (ii) length of pile, and (iii) soil elastic modulus become model parameters to assess the nonlinear lateral displacement and vibration mechanism of a single pile. In analytical processes, instead of using the whole seismic load for calculation nonlinear lateral displacement of the pile, a method was suggested for minimization of the analytical process. The statistical models and analysis have been applied for evaluating the accuracy of the analytical results and monitoring distribution probability of nonlinear lateral displacement of pile concerning different factors. The results illustrate the effect of the directions of seismic load, more specifically their combination, as it provides the non-linearity nature of seismic load, length of pile, and soil elastic modulus govern nonlinear lateral displacement mechanism and, these factors are important for predicting nonlinear displacement and monitoring mechanism vibration of the pile. The suggested method minimizes the analytical process, provides acceptable single pile seismic response prediction, and enhances the accuracy of the analytical results. The presented method can apply to solve many nonlinear dynamics problems, and it is not limited to single pile seismic analysis and design.